Plotting of a rolling ball

Question

Cem Eren Aslan 2024-5-24

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2122401-plotting-of-a-rolling-ball

编辑： VBBV 2024-5-24

Hi all,

I have data as below. First column is time column. The second column is x values and the third column is y values. I want to plot this data.The data shows that a round ball is at the x and y location at given time. This ball seems to be shifting/rolling. How can I plot this movement of the ball? The data is as follows.

Thanks.

                       0	                    0
00500000000000000	-1.99184823748972e-07	1.05798917365090e-13
0100000000000000	-9.95522559684969e-07	2.64284044491124e-12
0150000000000000	-2.70844960991857e-06	1.95618647719148e-11
0200000000000000	-5.57897138597691e-06	8.29997912681309e-11
0250000000000000	-9.72602113360498e-06	2.52254632243548e-10
0300000000000000	-1.52681885391364e-05	6.21646883377640e-10
0350000000000000	-2.24451354098218e-05	1.34342427617396e-09
0400000000000000	-3.12528324201816e-05	2.60463875809055e-09
0450000000000000	-4.14440486717297e-05	4.58029112081254e-09
0500000000000000	-5.27718390114465e-05	7.42631198040007e-09
0550000000000000	-6.49895772581970e-05	1.12630537391977e-08
0600000000000000	-7.79724695483816e-05	1.62125493532621e-08
0650000000000000	-9.15958589238721e-05	2.23728036586717e-08
0700000000000000	-0.000105613752470057	2.97447058954838e-08
0750000000000000	-0.000119902041788388	3.83373323333985e-08

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

VBBV 2024-5-24

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2122401-plotting-of-a-rolling-ball#answer_1463216

编辑：VBBV 2024-5-24

在 MATLAB Online 中打开

@Cem Eren Aslan, you can use plot function handle and delete it at end of every iteration inside the loop,

 data = [0	                        0	                    0
0.00500000000000000	-1.99184823748972e-07	1.05798917365090e-13
0.0100000000000000	-9.95522559684969e-07	2.64284044491124e-12
0.0150000000000000	-2.70844960991857e-06	1.95618647719148e-11
0.0200000000000000	-5.57897138597691e-06	8.29997912681309e-11
0.0250000000000000	-9.72602113360498e-06	2.52254632243548e-10
0.0300000000000000	-1.52681885391364e-05	6.21646883377640e-10
0.0350000000000000	-2.24451354098218e-05	1.34342427617396e-09
0.0400000000000000	-3.12528324201816e-05	2.60463875809055e-09
0.0450000000000000	-4.14440486717297e-05	4.58029112081254e-09
0.0500000000000000	-5.27718390114465e-05	7.42631198040007e-09
0.0550000000000000	-6.49895772581970e-05	1.12630537391977e-08
0.0600000000000000	-7.79724695483816e-05	1.62125493532621e-08
0.0650000000000000	-9.15958589238721e-05	2.23728036586717e-08
0.0700000000000000	-0.000105613752470057	2.97447058954838e-08
0.0750000000000000	-0.000119902041788388	3.83373323333985e-08];
t = data(:,1);
x = data(:,2);
y = data(:,3);
for k = 1:numel(x)
    h=plot(x(k), y(k), 'bo', 'MarkerFaceColor', 'b');
    pause(2); 
    delete(h);  % deletes the previous location /position of ball in figure
end

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

Answer 2

Animesh 2024-5-24

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2122401-plotting-of-a-rolling-ball#answer_1463166

在 MATLAB Online 中打开

Hi @Cem Eren Aslan,

You can use the plot function in MATLAB for simple visualization of the given 2D trajectory.

You can refer the following MATLAB Documention for more information on plot function: www.mathworks.com/help/matlab/ref/plot.html

Moreover, to visualize the movement over time you can use the loop to draw the position of ball at each time step. You can do something like this to visualize the movement:

for i = 1:length(x)
    plot(x(i), y(i), 'ro', 'MarkerFaceColor', 'r');
    pause(0.1); % Adjust the speed of animation by changing the pause duration
end

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Cem Eren Aslan 2024-5-24

First of all, thank you for your answer. The code is worked but all points where the ball passes are visible. How can I make it appear only in the current time period? For example, in the 2nd second, I do not want to see the place where it was seen in the 1st second. How can I do that? I drop a screenshot about result below.